What is Express.js? Why would you use it instead of the built-in http module?

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## What is Express.js? Express.js is a **minimal and flexible web application framework** for Node.js. It's the "E" in popular stacks like MERN, MEAN, and MEVN. ## Built-in http vs Express **Using built-in http module:** ```javascript const http = require('http'); const server =…